Process for making tires



9. l. ANDERSON. PROCESS FOR MAKING RES.

- APPUCKHON FIL'ED JAN-2B, 1919- V Yatented M21330, 1920.

gums

PELUL I. ANDERSQH, G3? 30:35:: Iv.

Application filed Jsnuery' es, 1e19,

of Des Moincs, in the county of Poll: and

State of Iowa, have invented. at certain new and useful Process forMaking ires, oi which the following is e specification.

In applying my invention I provide in connection with s, mold member, anannular ring designed to be placed in such position with relation to themold member to permit the proper stretching oi? the side of a tile forcompleting the tire, end putti the'besd at the edge of the the, so thatl9 tire may be completed 'a'vithcut wiinkling.

or buckling, or in any way pullingthe telerie of the tire out of propershepe.

Mo'e particularly the ob ect of invention is to provide a process formelting,

tires, whereby the above desirable elcjects may be ettemed.

l/Vitii t lese and other objects, my invention consists "in theconstruction end. er

rangement of the details eat my invention, as liei'einette more ldescribed, illustreted in the accompanying dram set forth in my claim,and desc my process and claim thereon:

In the accompanying drawings, Figure l shows a veiticehsectionel Viewthrough :1- ring embodying my invention,

Fig, 2 shcws s top DI plan View c seine installed in position witheels-Zion at s iction/ lied form of my sin In the eccempanying' drawingsIll hiwe used the reference numeral 16 to indicate generally the innermold. member oi? type commonly used in pneumatic tire fee tories.

In the manufacture of pneum the fabric is stietehed over the ber 10 andthe tire is shaped the side edges of the fshnic 0 down alongthe line orheed line.

When the outer nicld members ere placed on the the, it frequentlyhappens that the material wrinkles er buckles with the result of seriousdefects iii the tire.

In some instances after the attic been stretched on the inner moldmeinliei, the inner mold member is removed a d e pneumatic bag issubstituted which is 91?;-

m Pat-tented Mien 3t, 'llz litdo ri ei'isl ille. $73,663.

pended undeishesvy pressure after the cute rather than ingreesed,

lthere my device is used I provide an. an mules ring 11 lnefembly nmdein two parts fen convenience in handling, and. comprising it flatannular plete having between its edges s, lieng'e 12, which, in case thering is in the upper position. shown inFig. 3, exten s downwardly.

The ring 11 may be provided with a series of lisstening or engagingmeans such, for in stance, as the 13.

These devices serve as :t'zistening devices also serve e mes-ins forengaging the ring .11, hereinefter more fully described, whereby thegniisitien of the bead wire is SEZVGS fl 5 I the position of the i ig. 3svith the flenge he meld mem- 16 leyer by layer: isqsti'etched 'terenceoi? the mold menu it will sticl: on account of on 01" n account of theuse of ceupon thepicocess used in has been stretched 10, the e tipen eis pulled. toward old until the edge at e5 on ring ll.

cf the device shown in 'e is festened to the pins 13. device shcwn inFig i is Y cement en the ring. =eyer is placed in position t workmendesires to the tire will be de-' .eupon the ring 17 is placed on thering 11, as illustrated in Fig. 3, just outside the pins 13 on the rib14 or other gage device 011 the ring 11.

The bead wire 18 is then placed on the .fabric adjacent to the gage ring17, as illushereinbefore described, on one side, the

mold is turned over, and the fabric on the other side is stretched inthe same way and the bead formed.

It will be understood that the ring is reversible and after having beenused for stretching one side of the tire may be re moved and the tensionof the material will hold the side of the tire in horizontal position,when the mold is turned over, and the ring may then be used for theother side of the tire.

After the heads have been formed, and the proper amount of fabric placedon the tire, the ring is entirely removed and the gum or rubber isplaced on the outside of the tire; then the upper and lower outer moldmembers are drawn together and the inner movementof the outer moldmembers will cause said outer mold members to engage the beads formed-inthe tire and force them inwardly toward the bead lines A. The fabricused for making tires will stretch to a substantial extent, and whenstretched by the action of the outer mold member, after the fabric hasbeen stretched, and the bead formed in the manner hereinbeforedescribed, the whole tire will be completed without any wrinkles orbuckling.

7 It is obvious from the foregoing that various forms of mechanism maybe used for embodying the real spirit and intent of my invention, andthat changes may be made in the particular construction of the deviceshown herein without departing from such spirit, and it is my intention'to cover by my claim any reasonable form in which my real invention maybe embodied.

It will be seen that my process involves the placing of the fabric on aninner mold member, and the stretching of the sides of the tirehorizontally or substantially horizontally. p

In this connection it may be mentioned that the stretching may beslightly out of the horizontal, depending upon the amount of finalstretching that it is desired to secure when the outer mold member isplaced on the tire.

My process then involves the fastening of the outer edges of the tire inany suitable way; the gaging of the position for the bead wire and theforming of the bead While the tire side is stretched in substantiallyhorizontal position, the completion of the placing of the fabric on thetire and the forming of the bead, and the placing of the outer moldmember of the tire in such a way as to cause the outer mold member toengage the bead and force it inwardly for stretching the tire and takingall wrinkles and buckling out of it.

It may be mentioned that when I use the term horizontal hereinbefore setforth, what I really mean is that the side vof the .tire should beformed in a plane substantially parallel with that in which the innermold. member rests.

I claim as my invention:

The process of making tires comprising the stretching of tire fabricaround an inner mold member, the stretching of fabric at the side edgesof the tire in a plane sub stantially parallel with the plane in whichthe inner mold member rests, the forming of the bead at the side of thetire while the side edges are so stretched, the placing of the gum orrubber on the tire, and the subjecting of the tire thus far completed tothe pressure of outer mold members, whereby the head is forced to itsfinal position in the tire for thereby preventing any wrinkling orbuckling of the tire material.

Des Moines, Iowa January 24:, 1919.

PAUL I. ANDERSON.

